Home / 298,126.20-447,200.10-87,785.40

Finding the Fourth Proportional to 298,126.20, 447,200.10 and 87,785.40

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Solution

The fourth proportional to 298,126.20, 447,200.10 and 87,785.40 is: 131,681.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,126.20 : 447,200.10 = 87,785.40 : x
  2. Step 2: Convert to fraction form
    298,126.20/447,200.10 = 87,785.40/x
  3. Step 3: Cross multiply
    298,126.20x = 447,200.10 × 87,785.40
  4. Step 4: Simplify right side
    298,126.20x = 39,257,639,658.54
  5. Step 5: Solve for x
    x = 39,257,639,658.54/298,126.20
  6. Step 6: Final answer
    x = 131,681.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.